Common mixing: complete atrioventricular septal defect
Complete AVSD is often found in
conjunction with Down syndrome. There is a large defect often from the middle
of the atrial septum down to the middle of the ventricular septum. In addition
there is not a separate mitral and tricuspid valve, but there is a common
atrioventricular valve of 5 leaflets guarding the atrioventricular junction.
Most patients with Down syndrome
are screened for congenital heart disease with an echocardiogram. An ECG will
show a superior axis.
Medical: treat heart failure if present.
Surgery: is performed at 3mths of age,
before pulmonary hypertension causes
pulmonary vascular disease (Eisenmenger syndrome).